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esp.c: improve comment in esp_transfer_data()

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Whilst working on the previous patch, the existing comment was not enough to
document when the TI command codepath was being used. Update and improve the
comment accordingly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250711204636.542964-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Mark Cave-Ayland 2025-07-11 21:46:31 +01:00 • committed by Philippe Mathieu-Daudé
parent 1fa3812ee8
commit daaaec4f54
1 changed files with 3 additions and 2 deletions
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5
hw/scsi/esp.c
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@ -1029,8 +1029,9 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len)
case CMD_TI | CMD_DMA:
case CMD_TI:
/*
* Bus service interrupt raised because of initial change to
* DATA phase
* If the final COMMAND phase data was transferred using a TI
* command, clear ESP_CMD to terminate the TI command and raise
* the completion interrupt
*/
s->rregs[ESP_CMD] = 0;
s->rregs[ESP_RINTR] |= INTR_BS;